2121201334986 has 32 divisors (see below), whose sum is σ = 4244228876160. Its totient is φ = 706762830144.

The previous prime is 2121201334981. The next prime is 2121201334991. The reversal of 2121201334986 is 6894331021212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121201334981) and next prime (2121201334991).

It is not an unprimeable number, because it can be changed into a prime (2121201334981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234927520 + ... + 234936548.

It is an arithmetic number, because the mean of its divisors is an integer number (132632152380).

Almost surely, 2^{2121201334986} is an apocalyptic number.

2121201334986 is an abundant number, since it is smaller than the sum of its proper divisors (2123027541174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121201334986 is a wasteful number, since it uses less digits than its factorization.

2121201334986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21550.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 2121201334986 in words is "two trillion, one hundred twenty-one billion, two hundred one million, three hundred thirty-four thousand, nine hundred eighty-six".